Amazon.com : DJI Osmo Pocket - Set of 4 ND Filters (ND4, ND8, ND16, ND32) for Camera Lens, HD Photos, Light-reducing Materials, Magnetic Design, Easy to Change, Compatible with DJI Osmo Pocket,
DJI OSMO Pocket and Pocket 2 Filters – PGYTECH
Shooting with PolarPro's six-pack ND filter set for the DJI Osmo Pocket: Digital Photography Review
Amazon.com : Kase Magnetic Fader ND Filter ND2-ND400 for DJI Osmo Pocket 2/1 Camera,Variable Netural Density Filter ND2-400 Adjustable with Multi-Layer Coating Optical Glass : Electronics